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Although stainless steel angle iron boasts outstanding corrosion resistance, it is still prone to corrosive damage when exposed to harsh corrosive environments for a long time. This typical uniform corrosion occurs comprehensively on the contact surface between the angle iron and the corrosive medium, featuring continuous and uniform thinning of the section, which is most common in acidic and hot alkaline working environments.

Compared with traditional rectangular ventilation ducts, 321 stainless steel spiral ducts effectively solve the problem of turbulent airflow at the four corners of rectangular ducts, which easily reduces the effective ventilation area. With excellent comprehensive performance and low operation cost, this type of duct has been widely applied in shipbuilding, central air conditioning, purification engineering, bridge dust removal, airport and tunnel construction industries.

304 stainless steel round bar is the most widely‑used Cr‑Ni austenitic stainless steel with outstanding corrosion resistance, heat resistance, low‑temperature toughness and comprehensive mechanical properties. It stays rust‑proof under normal atmospheric conditions, while regular surface cleaning is required for industrial or heavily polluted zones.

Conventional lightning protection adopts exposed galvanized round bars or stainless‑steel tubes with metal brackets. Exposed fittings deform easily; damaged zinc coatings cause rust stains on stone cladding. Protruding tapes hinder gondola cleaning work with safety risks and water‑leaking joints, ruining the architectural facade.

Stainless steel round bars are solid long steel materials with a perfect circular cross-section. The industry uniformly adopts the millimeter value of steel diameter as the specification standard. For example, a round bar marked "50" means its diameter is 50 millimeters. There are abundant material types of stainless steel round bars on the market, and the mainstream common models include 201, 202, 301, 304, 303, 304L, 316, 316L, 321, 2520 and others.

When 304 stainless steel round bars are subjected to long-term alternating loads, structural fracture may still occur after prolonged operation even if the applied stress value is lower than the yield limit of the material.